<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script type="text/javascript">
			//盒子，容器
			
			//定义变量
			var name;
			//赋值
			name = "王五";
			//使用
			alert(name);

            //变量初始化
			var age = 20;
			alert(age);
			
			var $sex = "男"
			
			var nick66 = "铁蛋";
			
			var NAME = "赵六";
			
			var myName = "";
		</script>
	</head>
	<body>
	</body>
</html>
